NEW PLAYER WANNA START

Hey!

I WANT TO START ULTIMATE TEAM

I never ever played fifa let alone ultimate team.
I have a son on the way and want to get good at fifa and football altogether to whoop his ahh

How should i start?
Where to begin?
What packs should i open?
How do i know i got good cards?
What games should i play?

Please write me everything you know about ultimate team!

Thanks!